@Override
 public void invoke(@NotNull Project project, Editor editor, @NotNull PsiElement element)
     throws IncorrectOperationException {
   if (!FileModificationService.getInstance().preparePsiElementsForWrite(element)) return;
   final XmlAttribute attr = (XmlAttribute) element.getParent();
   final String name = attr.getName();
   final XmlAttributeDescriptor descriptor = attr.getDescriptor();
   LOG.assertTrue(descriptor != null);
   String value = attr.getValue();
   final PsiElement declaration = descriptor.getDeclaration();
   if (declaration instanceof PsiField) {
     final PsiType fieldType = ((PsiField) declaration).getType();
     final PsiType itemType =
         JavaGenericsUtil.getCollectionItemType(fieldType, declaration.getResolveScope());
     if (itemType != null) {
       final String typeNode = itemType.getPresentableText();
       JavaFxPsiUtil.insertImportWhenNeeded(
           (XmlFile) attr.getContainingFile(), typeNode, itemType.getCanonicalText());
       final String[] vals = value.split(",");
       value =
           StringUtil.join(
               vals,
               new Function<String, String>() {
                 @Override
                 public String fun(String s) {
                   return "<"
                       + typeNode
                       + " "
                       + FxmlConstants.FX_VALUE
                       + "=\""
                       + s.trim()
                       + "\"/>";
                 }
               },
               "\n");
     }
   }
   final XmlTag childTag =
       XmlElementFactory.getInstance(project)
           .createTagFromText("<" + name + ">" + value + "</" + name + ">");
   attr.getParent().add(childTag);
   attr.delete();
 }
  private static void inlineSingleTag(
      XmlTag includeTag, XmlTag includeParentTag, XmlTag layoutRootTag) {
    final Map<String, String> attributesToAdd = new HashMap<String, String>();

    for (XmlAttribute attribute : includeTag.getAttributes()) {
      final String namespace = attribute.getNamespace();

      if (SdkConstants.NS_RESOURCES.equals(namespace)) {
        attributesToAdd.put(attribute.getLocalName(), attribute.getValue());
      }
    }
    final XmlTag newTag = (XmlTag) includeTag.replace(layoutRootTag.copy());
    final List<XmlAttribute> toDelete = new ArrayList<XmlAttribute>();

    for (XmlAttribute attribute : newTag.getAttributes()) {
      if (attribute.isNamespaceDeclaration()) {
        final String localName = attribute.getLocalName();
        final String prefix = localName.equals(attribute.getName()) ? "" : localName;
        final String namespace = attribute.getValue();

        if (includeParentTag != null
            && namespace.equals(includeParentTag.getNamespaceByPrefix(prefix))) {
          toDelete.add(attribute);
        }
      }
    }

    for (XmlAttribute attribute : toDelete) {
      attribute.delete();
    }

    for (Map.Entry<String, String> entry : attributesToAdd.entrySet()) {
      final String localName = entry.getKey();
      final String value = entry.getValue();
      newTag.setAttribute(localName, SdkConstants.NS_RESOURCES, value);
    }
    CodeStyleManager.getInstance(newTag.getManager()).reformat(newTag);
  }